Jordanian officials said a fire at a Syrian refugee camp in Jordan has killed a Syrian man and two of his sons while the third son was in critical condition at an Amman hospital.

The officials said 40-year-old Yassin Hariri and his boys - aged three and eight - died early on Tuesday, hours after a gas canister used for heating exploded and burned down their tent in the Zaatari camp.

Dr. Ishaq Maraqa said the Hariris were brought to Mafraq Hospital late on Monday with "severe burns all over their bodies."